用反应型记载小麦苗期白粉病
文献类型: 中文期刊
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期刊名称:植物保护
ISSN: 0529-1542
年卷期: 1988 年 14 卷 01 期
页码: 49
收录情况: 北大核心
摘要: 以反应型作为苗期抗性鉴定和生理小种鉴定等,有周期短、效率高和标准较严的特点,但目前国内有关单位采用的分型标准不尽一致。通过对9000多个品种的观察认为,分型中常有些描述是属特殊条件下的偶然现象,用于分型将干扰主要特征的观察,影响记载准确性。现提出以病斑大小、厚薄和多少为分型依据的方法,简单、便于掌握、记载也较准确: 0型:免疫,植株无病斑; 0;型:坏死反应,叶片有枯死斑; 1型:高抗,病斑小(一般直径小于1mm)菌丝层稀薄可见绿色叶面,偶见较大
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